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    <title>Math对象</title>
    <script>
        //求圆的面积
        console.log(Math.PI * Math.pow(3, 2));
        //max
        console.log(Math.max(1, 2, 5, 7, 33, 221, 77, 55, .3));
        console.log(Math.random());
    </script>
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